Check the user's ansible.cfg for role/collection paths.

There's no other way to add our new paths reliably without breaking things.

awx/main/utils/ansible.py

@@ -5,11 +5,15 @@
 import codecs
 import re
 import os
+import logging
 from itertools import islice
+from configparser import ConfigParser
 
 # Django
 from django.utils.encoding import smart_str
 
+logger = logging.getLogger('awx.main.utils.ansible')
+
 
 __all__ = ['skip_directory', 'could_be_playbook', 'could_be_inventory']
 
@@ -97,3 +101,20 @@ def could_be_inventory(project_path, dir_path, filename):
     except IOError:
         return None
     return inventory_rel_path
+
+
+def read_ansible_config(project_path, variables_of_interest):
+    fnames = ['/etc/ansible/ansible.cfg']
+    if project_path:
+        fnames.insert(0, os.path.join(project_path, 'ansible.cfg'))
+    values = {}
+    try:
+        parser = ConfigParser()
+        parser.read(fnames)
+        if 'defaults' in parser:
+            for var in variables_of_interest:
+                if var in parser['defaults']:
+                    values[var] = parser['defaults'][var]
+    except Exception as e:
+        logger.warn('Failed to read ansible configuration(s) {}: {}'.format(fnames, e))
+    return values